Adhesion of a UHPFRC cover to a regular concrete as protection for marine structures

Author(s) : S. Vildaer, C.Cremona
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 683 - 690
Total Pages : 8
Language : English

Abstract: The marine exposure class imposes high cement content in concrete mix design to justify durability criteria which only concern concrete cover exposed to external attacks. The objective of this paper is to present an alternative approach designed by Bouygues Travaux Publics to solve this problem. It consists of modifying the cover properties for durability requirements, creating a protective layer against chloride or CO2 ingress, while prescribing a regular structural concrete for the remaining part of the structure.
This approach is based on a double wall structure as used for buildings. The external skin is prefabricated with a UHPFRC's thin concrete, maintained against the formwork and providing a good resistance to chloride or CO2 ingress. The characterization of the coating adhesion with the structural concrete as well as the durability and the adhesion of joints are presented and detailed in this article.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00